Dwayne Harrison-Brooks, 34 of no fixed address, was charged on Thursday, 15 April with causing grievous bodily harm and possession of a bladed article.
He appears in custody at Westminster Magistrates’ Court on Friday, 16 April.
Police were called at 7.12pm on Wednesday, 14 April to reports of a stabbing at Westfield, off Ariel Way, W12.
Officers attended along with London Ambulance Service and a 21-year-old man was taken to hospital with a stab injury to his thigh. His condition was assessed as non-life-threatening.